The PIC EUSART supports 9-bit transmission. This bit could be used for data, parity or serve as a second stop bit, but not any two of them at the same time. Calculation of the parity bit should be sent alongside the data byte, by setting TX9D. In the same way, testing for receiving data parity should be done on the RCIF ISR.
Including a second stop bit or even half a stop bit for 1,5 standard value could potentially be done by a timer or delay after the TXIF is set, using the idle status of the line as a stop bit. This is, however, a bit of a stretch of the EUSART.
So, potentially this is what the PIC could do, Note that sometimes the stop bit is done by the hw peripheral itself and sometimes by means of said delay.
9,N,x
8,(Even/Odd),x
But... at the end of the day, almost everything is 8,N,1.